28947560

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1129}}^1$

素因数の和:1781

約数の個数: 32

約数和(自身を含む): 65291400

約数和(自身を除く): 36343840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1129, 1282, 2258, 2564, 3205, 4516, 5128, 5645, 6410, 9032, 11290, 12820, 22580, 25640, 45160, 723689, 1447378, 2894756, 3618445, 5789512, 7236890, 14473780, 28947560]

約数ペア:

[(1, 28947560), (2, 14473780), (4, 7236890), (5, 5789512), (8, 3618445), (10, 2894756), (20, 1447378), (40, 723689), (641, 45160), (1129, 25640), (1282, 22580), (2258, 12820), (2564, 11290), (3205, 9032), (4516, 6410), (5128, 5645)]